Caterpillar 4C-6767 Compactor Lubricating Oil

Cat 4C-6767 Compactor Oil is a synthetic lubricant designed for Cat vibratory compactors, supplied in a 5-gallon container (Part No. 4C-6767). This ISO 220 viscosity‑grade oil delivers about 221 cSt at 40°C and 28.5 cSt at 100°C, with a pour point of -42°C and a flash point of 240°C, plus a specific gravity near 0.87 and a viscosity index around 169. It provides copper corrosion resistance rated 1B and Rust Protection performance, making it suitable for harsh, dusty operating conditions. The oil is specified for Cat compactor compartments and is used to lubricate critical components such as the final‑drive/planetary gear in the drum drive system and the eccentric weight housing during vibratory service. These properties support wear protection and reliable operation in high‑load, long‑cycle compactor applications, aligning with Caterpillar’s guidance for synthetic oil in ISO 220 service environments. The 5-gallon size is a common service package for field maintenance of Cat compactors.